Expanding the toolbox for nanoparticle trapping and spectroscopy with holographic optical tweezers

Dienerowitz, M., Gibson, G., Dienerowitz, F. and Padgett, M. (2012) Expanding the toolbox for nanoparticle trapping and spectroscopy with holographic optical tweezers. Journal of Optics, 14(4), 045003. (doi: 10.1088/2040-8978/14/4/045003)

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Publisher's URL: http://dx.doi.org/10.1088/2040-8978/14/4/045003


We have developed a workstation based on holographic tweezers to optically trap, move and characterize metal nanoparticles. Our advanced darkfield imaging system allows us to simultaneously image and take spectra of single trapped metal nanoparticles. We take advantage of the beamshaping abilities of the spatial light modulator and correct for aberrations of the trapping optics. We monitor the improvement of the optical trap with video-based nanoparticle tracking. Furthermore we theoretically assess the capabilities and limitations of video-based tracking for nanoparticle position detection, in particular with respect to acquisition frequencies below the corner frequency.

Item Type:Articles
Glasgow Author(s) Enlighten ID:Padgett, Professor Miles and Dienerowitz, Dr Maria
Authors: Dienerowitz, M., Gibson, G., Dienerowitz, F., and Padgett, M.
College/School:College of Science and Engineering > School of Physics and Astronomy
Journal Name:Journal of Optics
Journal Abbr.:J. Opt.
Publisher:IOP Publishing
ISSN (Online):2040-8986
Published Online:23 March 2012
Copyright Holders:Copyright © 2012 European Optical Society
First Published:First published in Journal of Optics 14(4):045003
Publisher Policy:Reproduced in accordance with the copyright policy of the publisher

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Project CodeAward NoProject NamePrincipal InvestigatorFunder's NameFunder RefLead Dept
482571Multi-object, high-throughput, spectro-microscopy: Life Sciences InterfaceMiles PadgettEngineering & Physical Sciences Research Council (EPSRC)EP/H007636/1Physics and Astronomy